Hydraulic motor



May 30, 1944.

HYDRAULIC MOTOR Filed March 31, 1941 Patente'd May 30, 1944 UNITEDSTATES PATENT OFFICE.

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Aiflilll' L. Parker, canine, om, alignor to The Parker ApplianceCompany, Cleveland, Ohio, a corporation of Ohio Application March :1,1941, Serial No. 386,219

,1 Claim. (cl. co -er) This invention relates to improvements inhydraulic motors, and more particularly to & Wil of motor in which fluidunder pressure supplied from an outside source will impart limitedrotation to the motor shaft.

An object of this invention is to provide a motor of the type describedin which the vane varying torques of predetermined magnitudes upon themotor shaft.

The above and other objects of the invention will in part be obvious andwill be hereinafter more Iullypointed out.

In the accompanying drawing:

Figure 1 is a top view, in section, taken along the line A-A of Figure2.

Figure 2 is a side view in section, taken along the line 28-3 of Figure1.

Figure 3 is a diagrammatic view showing one form of piping arrangementfor supplying fluid asatllandinwhichismountedabushinglL The closureplate It also includes a centrally located Pmlecting portion ll having'acentral bore It in which is mounted another bushing 2|. A shalt I2 ismounted within the casing and is journaled in the bushings it and II, asshown. A

thrust bearing 23 is provided in the recessed lower end 01 the shaft 22for taking end thrust thereon.

Keyed to the outer end of the shaft 22 by means oi the keys 23a is aflange 24 with spaced bolt holes "to allow proper connection to the partwhich it is desired to rotate by means of the mo-, tor. A suitablebushing 2C is provided within the counterbore 21' oi the extension I!for iournaling the hub extension 24a 01 the flange 24. Intermediate thebushings II and It there is provided any suitable packing means 20 forsealing against the. leakage oi fluid from within the casing Ill.

Intermediate the ends of the shaft 22 and formed integrally flierewiththere is a circular flange portion 29. This flange portion is preferablyspaced a greater distance from either of the end wall portions I! or itso as to divide the bore ll into two chambers and ll of unequal length.In the present instance as shown in Figure 2 the flange 20 is spacedcloser to the end wall radially projecting rib or vane 34 which extendsfrom the end wall I! to the end wall I3.

Rigidly mounted as at 35 within the chamber .3. and extending from theend wall l3 to the flange 29 of the shall; 22 is the segmental portion36. This segmental portion extends radially from the casing wall It tothe shaft 22 and thus in conjunction with the vane 34 divides thechamber 3! into the chambers 30a. and 30b. A bore passage 3! establishescommunication between the chamber 30-a and a threaded outlet ll in thecasing II). A similar passage 38 establishes communication betweenchamber 30-!) and a threaded outlet in the casing ill. To these threadedoutlets 39 and 40 are connected fluid conduit lines 4| and 42 which leadto a suit able reversing valve 43 o1- conventional design.

A second segmental portion 44 similar to the segmental portion it ismounted within the chamber ii and divides it into the chambers 3i-a andil -b in a like manner. Passages 48 and 46 establish communication withthe fluid conduits 41 and 48 respectively. A second valve 48 similar tothe valve 43 controls the passage or mud in the conduits 4! and 4s.

In the operation of the motor, the valves 43 and 48 may be turned to theposition as shown in Figure 3. with this arrangement, the pressuresupply pump will force fluid through the valve 48, the conduit 41. thePassage 45, and into the chamber 3l'a. The pressure of this fluid uponthe vane 34 will cause the latter to rotate in a clockwise direction asviewed in Figure 3. Since sage 38, conduit 42, valve 53, conduit6|,passage 31 into the-chamber 3H. Thus the turnin torque exerted on theflange 243 is directly dependent on the area of that portion 01. thevane 34 which extends within the chamber 3i. 90 degrees rotation of thevalve 65 will connect the pressure line 5ia with the line 68, thepassage 46, and the chamber 31-?) to cause the van 31! to rotate in acounterclockwise direction as viewed in Figure 3.

In a similar manner, the valves 63 and 59 may beadjusted so that fluidunder pressure will be admitted to either chamber 3H or 38-h and causeeither clockwise or counterclockwise rotation of the flange 2t, and atthe same time free circulation established between the chambers 3 l-aand Sl-b. Since the chamber 30 extends axially farther than the chamber3|, there is a greater vane area subjected to fluid pressure, andtherefore, a greater torque transmitted to the flange 2 when the chamberat is utilized than when the chamber 3i is utilized.

I claim: I

A fluid motor comprising a cylinder. a transverse partition for dividingsaid cylinder into separate chambers, an oscillatable shaft disposedcentrally of the cylinder and extending through the partition and bothof said chambers, a vane in each chamber extending longitudinallythereof, each vane being oscillatable and rigid with the shaft andextending from one end of the chamber to' the other in which it islocated and also contacting at its free edg with the cylinder wall anabutment in each chamber extendinglongitudinally thereof and fixed tothe cylinder wall, said abutment being in contact with the shaft,each'of said abutments having ports leading through opposite sidesthereof to the chamber with which it is associated, a fluid supply forthe motor, independently operated-valves disposed between the fluidsupply and'the respective chambers, each valv having ports adapted to bepositionedso that fluid may be directed to the chamber with which it isassociated at either side of the abutment and exhausted from the otherside, and a port for connecting the chamber at opposite sides of theabutment so as to provide a neutral closed fluid chamber.

ARTHUR L. PARKER.

